Billy Summers

 Fiction by Stephen King

https://www.barnesandnoble.com

Billy Summers is an assassin who tells himself he only kills bad people. But being paid by bad people to kill other bad people is beginning to bother his conscience, and so he plans to retire. But then he's offered one last job...

This is kind of a familiar setup, but the way Stephen Kings writes is anything but formulaic. The point of the story is the characters, and this book has some truly believable characters.

I also read recently by this author: Joyland